| Bergisch Gladbach to Oria | 882.38 mi (1,420.06 km) |
| Bergisch Gladbach to Oristano | 769.19 mi (1,237.90 km) |
| Bergisch Gladbach to Orta Nova | 782.52 mi (1,259.35 km) |
| Bergisch Gladbach to Orte | 639.46 mi (1,029.12 km) |
| Bergisch Gladbach to Ortona | 688.65 mi (1,108.28 km) |
| Bergisch Gladbach to Orvieto | 617.82 mi (994.28 km) |
| Bergisch Gladbach to Orzinuovi | 407.27 mi (655.44 km) |
| Bergisch Gladbach to Osimo | 597.78 mi (962.03 km) |
| Bergisch Gladbach to Ospitaletto | 399.18 mi (642.42 km) |
| Bergisch Gladbach to Ostuni | 867.27 mi (1,395.73 km) |
| Bergisch Gladbach to Ottaviano | 783.76 mi (1,261.33 km) |
| Bergisch Gladbach to Ovada | 444.50 mi (715.35 km) |
| Bergisch Gladbach to Ozieri | 724.62 mi (1,166.17 km) |
| Bergisch Gladbach to Paceco | 937.01 mi (1,507.97 km) |
| Bergisch Gladbach to Pachino | 1,061.73 mi (1,708.69 km) |
